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Summary

When two moons appear, the kings meet the ghost of Malakai, the first king of Kinkow, who explains that an evil twin will destroy the island. After interrogating every twin on Kinkow, Boomer and Brady begin to turn on each other. Following Lanny's advice, the kings journey to the Dark Side to the Evil King's Castle to sit on the evil throne and learn the truth. The prophecy comes true when the Evil King is revealed (who is Yamakoshi), putting Brady under a spell and morphing him into Evil Brady. With Mason and Mikayla in tow, Boomer heads to the Dark Side to save his brother and the island from sinking into the sea.